Is a mortgage guaranty insurer entitled to reimbursement from a debtor who has paid out of a nonjudicial foreclosure?

Although the parties have not brought to our attention a California case dealing with a mortgage guaranty insurer who, having paid the claim of the lender after a nonjudicial foreclosure, seeks to obtain reimbursement for such payment from the debtor, we find the facts herein substantially similar in effect to those in Union Bank v. Gradsky (1968) 265 Cal.App.2d 40, 71 Cal.Rptr. 64, and conclude that the indemnity agreements herein are nothing more than attempts to recover a deficiency in violation of the antideficiency statute.